Dipeptide-2 can improve eye edema and remove dark circles. It is a potent angiotensin-converting enzyme (ACE) inhibitor; By inhibiting AEC activity, it reduces blood vasoconstriction around the eyes and promotes blood circulation to remove dark circles. Dipeptide-2 is mainly used as a skin conditioning agent, as a natural moisturizing factor, it can help keep the intercellular structure of the epidermis intact, facilitate the healing process of the skin, prevent skin irritation, and even regenerate the skin.